When you ask "What number is halfway between 29 and 520?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=29 and Y=520.
To find the number halfway between 29 and 520, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 29 and 520 into our formula, we get:
(29 + 520)/2 = 274.5
Thus, the number halfway between 29 and 520 is 274.5.
To check that our answer is correct, we subtract 29 from 274.5 and subtract 274.5 from 520 and compare the two numbers:
274.5 - 29 = 245.5
520 - 274.5 = 245.5
As you can see, the halfway number is 245.5 higher than 29 and 245.5 lower than 520. Therefore, our halfway between answer of 274.5 above is correct.
Halfway Between
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Halfway Between 29 and 521
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